Question

What's the domain f(x)= x-1/x+3

Answer 1

let's start over. do you have any idea what the domain might be?

Answer 2

what numbers make sense for this function? In other words, what number or numbers do you see that might NOT work for this function?

Answer 3

are you there?

Answer 4

consider a domain that contains all real numbers but one. What number would that be?
I hope that helps

Answer 5

So would the answere be all real numbers

Answer 6

no.
there is one real number that does not make sense for the function. it makes the function undefined.

Answer 7

the 1/x part of the equation can be satisfied by every real number but one. Do you know what that number is?

Answer 8

No I don't

Answer 9

if you substitute x=0 into the equation, what do you get ?

Answer 10

-1/3

Answer 11

well, there is a problem with 1/0.

Answer 12

when x=0, f(x) is undefined.

Answer 13

Can u please just give me the answer? I'm begging u!!! I understand how to do it just need the answer!!!! N

Answer 14

all reals but x=0

Answer 15

wait. is that 1/x?
or is it 1/(x+3)?

Answer 16

if it is 1/(x+3), then it is all reals except x=-3